In surgery of fractured long bones, a patient suffering from osteoporosis represents constant challenge to a surgeon and applied material and instruments that need to destroy as little as possible of an already damaged bone. One potential way of increasing the contact surface between the implants and osteoporotic bone is injection of bone cement (methyl-metacrilat, Palakos) into a prepared scre...

PURPOSE This study compared the performance of a video-based infrared three-dimensional eye tracker device (Chronos) with the scleral search coil method. METHODS Three-dimensional eye movements were measured simultaneously with both systems during fixation, saccades, optokinetic stimulation, and vestibular stimulation. RESULTS Comparison of fixation positions between -15 degrees and +15 deg...

Abstract In this work, we present the mathematical formulation and numerical implementation of a new model for initially straight, transversely isotropic rods. By adopting configuration space that intrinsically avoids shear deformations by systemically neglecting energetic contribution due to torsion, proposed admits an unconstrained variational statement. Moreover, as natural state rod is triv...

Abstract Torsion tests provide important shear stress and strain relationships to reveal the fundamental plastic flow response of a material. Bespoke torsion techniques complemented by digital image correlation are developed accurately measure stress–strain relationship at quasi-static, medium rate 9/s, high above 1000/s. The equipment used includes screw-driven mechanical system, hydraulic Ins...

      Ovarian torsion (adnexal torsion) is an uncommon disorder in pediatrics and should be considered as a differential diagnosis of abdominal pain in preteen girls. Almost 70% of ovarian torsions are seen in young girls older than 20 years, but it could also occur in preteen girls. Sonography is one of the most useful methods to diagnose ovarian torsion. In pediatrics, ovarian torsion should ...

The three-dimensional load displacement behavior of nine fresh adult L5-S1 spine motion segments was studied. Static test forces up to 160 N in anterior, posterior, and lateral shear, test forces up to 320 N in compression, and test moments up to 15.7 Nm in flexion, extension, lateral bending, and torsion were used. The six displacements of the center of the inferior L5 endplate were measured 1...

Abstract. This paper aims the study of lightweight gears through a novel approach based on multibody model contact-based with pseudo-rigid teeth. method considers teeth as bodies attached to main body revolute joints and torsion springs precomputed stiffness. Thanks this approach, lightening is considered by varying value stiffness parameter. To validate method, first step compares Transmission...

 Abstract  Testicular torsion is a medical emergency appearing at any age, the prevalence of  which in the neonatal period comprises 10% of the whole cases occurring at any  point in life. Among all the cases being diagnosed at birth, 70% has occurred in the  prenatal period and 30% in the neonatal period. Generally, the most common symptoms  of testicular torsion during postnatal period includ...

abstract  testicular torsion is a medical emergency appearing at any age, the prevalence of  which in the neonatal period comprises 10% of the whole cases occurring at any  point in life. among all the cases being diagnosed at birth, 70% has occurred in the  prenatal period and 30% in the neonatal period. generally, the most common symptoms  of testicular torsion during postnatal period include...

$f(Q)$ gravity is the extension of symmetric teleparallel general relativity (STGR), in which both curvature and torsion vanish attributed to nonmetricity. This work performs theoretical analyses static spherically solutions with an anisotropic fluid for gravity. We find that off-diagonal component field equation due a coincident gauge leads stringent restrictions on functional form In addition...